FIELD: in process of single-pass welding of metals by means of consumable electrode in carbon dioxide for protecting surfaces of welded parts and manufacturing equipment against melt metal splashes. SUBSTANCE: composition of coating protecting surfaces against melt metal splashes contains next ingredients, g/1 l of water: sulfite-alcohol mash, 100 - 150; soda ash, 40 - 50; filler, 200 -250. Sapropel is used as filler. Such composition allows to enhance protective properties of coating due to good wettability of surfaces contaminated with fats, oils and other matters. EFFECT: improved protective properties of coating, low cost of its ingredients. 1 tbl
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